FERVANITE (Fe4(VO4)4.5(H2O))
Class: phosphate
Rarity: Very Rare Crystal:  crystal with a fibrous habit 
Colour: yellow brown;   Lustre: viteous;   Fracture: unknown;  
Hardness - between 0 and: 10;   Density - between 0 and: 24
Dana number: 725

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